Fiber-reinforced material and structure

Patent metadata

Field	Value
Publication number	US-12030998-B2
Application number	US-201816481122-A
Country	US
Kind code	B2
Filing date	Jan 31, 2018
Priority date	Feb 3, 2017
Publication date	Jul 9, 2024
Grant date	Jul 9, 2024

Abstract

Disclosed herein are a fiber-reinforced material and an article made of the same. The fiber-reinforced material includes a fiber assembly and a matrix material coating the fiber assembly, the matrix material is a thermoplastic resin composition obtained by blending a polyolefin resin, a polyamide resin, and a modified elastomer that reacts with the polyamide resin. When a puncture test is performed at a striker speed of 1-4 msec and when a maximum impact force is applied is defined as PM and a deflection at break is defined as PB, PB/PM≥4. When the amount of energy absorbed before a maximum impact force is applied is E1, the amount of energy absorbed after a maximum impact force is applied and before break is E2, and a total amount of absorbed energy of E1 and E2 is ET, the ratio of E2:ET is 70% or more.

First claim

The invention claimed is:

1. A fiber-reinforced material comprising:
fiber; and
a matrix material coating the fiber,
wherein the fiber is a fiber assembly,
wherein the fiber assembly is at least one selected from a group consisting of a woven fabric, a knit fabric and a non-woven fabric,
wherein the matrix material is a thermoplastic resin composition obtained by blending a polyolefin resin, a polyamide resin, and a modified elastomer having a reactive group that reacts with the polyamide resin,
wherein the modified elastomer is a maleic anhydride-modified ethylene-butene copolymer, and
wherein the thermoplastic resin composition has a continuous phase (A) containing the polyolefin resin, and
a dispersed phase (B) dispersed in the continuous phase (A) and containing the polyamide resin.

2. The fiber-reinforced material according to claim 1 , wherein when a puncture test is performed at a striker speed of 1 m/sec or more but 4 m/sec or less, and when a deflection (mm) when a maximum impact force (N) is applied is defined as P M , and
a deflection (mm) at break is defined as P B , P B /P M ≥4.

3. The fiber-reinforced material according to claim 2 , wherein when an amount of energy (Nmm) absorbed before a maximum impact force (N) is applied is defined as E 1 , an amount of energy (Nmm) absorbed after a maximum impact force (N) is applied and before break is defined as E 2 , and
a total amount of absorbed energy (Nmm) as a total of the amount of energy E 1 and the amount of energy E 2 is defined as E T , a ratio of E 2 to E T (E 2 /E T ) is 70% or more.

4. The fiber-reinforced material according to claim 1 , wherein the dispersed phase (B) further contains the modified elastomer, and
the dispersed phase (B) has a continuous phase (B 1 ) containing the polyamide resin and a fine dispersed phase (B 2 ) dispersed in the continuous phase (B 1 ) and containing the modified elastomer.

5. An article comprising a fiber-reinforced material according to claim 1 .

Assignees

• Toyota Boshoku Kk

Inventors

• GEHO Kosuke
• Kito Masayuki
• SAKO Mitsutaka
• Takahashi Goro

Classifications

• C08L2205/03

  containing three or more polymers in a blend · CPC title

• C08L23/12

  Polypropene · CPC title

• C08J2477/04

  Polyamides derived from alpha-amino carboxylic acids (C08J2477/10 takes precedence) · CPC title

• C08J2423/08

  Copolymers of ethene (C08J2423/16 takes precedence) · CPC title

• C08J2323/12

  Polypropene · CPC title